SELECT
    C_CUSTKEY,
    C_NAME,
    SUM(L_EXTENDEDPRICE * (1 - L_DISCOUNT)) AS REVENUE,
    C_ACCTBAL,
    N_NAME,
    C_ADDRESS,
    C_PHONE,
    C_COMMENT
FROM
    CUSTOMER,
    ORDERS,
    LINEITEM,
    NATION
WHERE
    C_CUSTKEY = O_CUSTKEY
    AND L_ORDERKEY = O_ORDERKEY
    AND O_ORDERDATE >= '1993-10-01'
    AND O_ORDERDATE < '1994-01-01'
    AND C_NATIONKEY = N_NATIONKEY
    AND C_ACCTBAL :varies
    AND L_EXTENDEDPRICE :varies
GROUP BY
    C_CUSTKEY,
    C_NAME,
    C_ACCTBAL,
    C_PHONE,
    N_NAME,
    C_ADDRESS,
    C_COMMENT
ORDER BY
    REVENUE DESC